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On Temporal Variation of the 0.511 MeV Line in A Solar Flare

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Abstract

The time profile of the 0.511 MeV line flux for the flare of 16 December 1988 is studied. Differing from previous conclusions, we found that a fixed spectral index cannot fit the observations. It is shown that a good fit can be realized if the spectral index varies with time. But the same good fit can be also obtained if the conversion factor of positrons to the 0.511 MeV photons changes with time. At present it is very difficult to say which situation is more practical.

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Authors and Affiliations

  1. Purple Mountain Observatory, Nanjing , 210008, China

    W.Q. Gan

  2. Max-Planck-Institut für Extraterrestrische Physik, 85740 , Garching, Germany

    E. Rieger

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  1. W.Q. Gan
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  2. E. Rieger
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Gan, W., Rieger, E. On Temporal Variation of the 0.511 MeV Line in A Solar Flare. Solar Physics 186, 311–318 (1999). https://doi.org/10.1023/A:1005181916063

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